Acetylene-gas generator.



PATENTED OCT. 29. 1907.

APPLICATION FILED NOV. 28, 1904.

2 SHEETS-SHEET 1.

O Illllllllllll III] IIIIIIIII III PATENTED OCT. 29. 1907.

J. MARGRETH.

.ACETYLENE GAS GENERATOR.

APPLICATION FILED NOV. 28. 190-1.

2 SHBETSSHEET 2.

UNITED STATES PATENT OFFICE.

JOSEPH MARGRETH, OF BERGEDORF, NEAR HAMBURG, GERMANY.

ACETYLENE-GAS GENERATOR.

To all whom it may concern:

Be it known that I, JosEPH MARGIu-JTH, manufacturer, a citizen of Switzerland, and resident of Bergedorf, near Hamburg, Germany, have invented new and useful Improvements in Acetylene-Gas Generators, of which the following is a specification.

This invention relates to acetylene storm lamps which are primarily designed for use in effecting an economical and abundant illumination of large industrial installations and the like and can also be used to advantage for illuminating the permanent way of railways and the like in case of repairs and salvage operations. The newlamp may also be employed further for fire brigade purposes in clearing up operations, in building bridges, in foundries, in tunnel constructions, etc. The improved lamp may also be made to give out several thousand candle power and can be set in operation in the fraction of a minute. An essential advantage of the new lamp consists in its extreme simplicity and capacity to withstand the weather.

The essence of the invention consists in producing a very high gas pressure, and causing the gas to issue in one or more parallel jets from the burner withsuch a high velocity that the velocity of ignition oi the gas is less than the velocity of exit.

Various practical forms of lamps according to this invention are illustrated by Way of example in the accompanying drawings in which Figure l is a longitudinal section through the improved lamp; Figs. 2 and 3 are sections of modified forms of the generator.

The improved acetylene generator consists of the water vessel 1 which is closed by removable cover 2.

.In the water vessel there is arranged a gas hell 3 with a gas outlet pipe 4. In the bell 3 there is inserted a vessel 5 which has in its bottom an aperture 6 through which the water reaches the carbid. The carbid cartridges 7 rest upon a grating 8 which is arranged in the vessel 5 a few centimeters away from the bottom. The vessel 5 is closed by a cover formed with holes or it may be entirely open at the top. Right-angled springs, catches or bolts 9 fixed to the bell 3 serve to prevent the vessel 5 from falling out of the bell 3. But the vessel 5 may also be omitted and in its stead the grating 8.may be fixed t0 the vessel 3 by means of the bolts 9. However the arrangement of a vessel 5 or of a separate bottom for the vessel 3 below the grating is advantageous for the purpose of insuring a steady flame. In the cover of the water vessel 1 is screwed the gas supply pipe 10 for the burner which is of peculiar construction and ishereinafter described. This pipe is provided at its lower portion in the interior of the vessel 1 with a sleeve or lock nut 11 into which the outlet pipe 4 of the hell 3 is inserted or soldered in a gas-tight manner.

The manner of charging and operating the storm lamp Patented Oct. 29, 1907.

Serial No. 234.554.

is as iollows:-For the purpose of charging, the cover 2 is removed, the bell 3 is taken out, and after removing the bolts 9, the vessel 5 is taken out fromthe bell. Then after removing the cover 12, the carbid cartridges 7 are placed into the vessel 5. These operations are then re- -versed in order to put the lamp together again. In cases where no vessel 5 is employed, only the bell 3 and the grating, or the bottom situated under the same, need be removed. But before the cover 2 is replaced, the vessel 1 is filled with water almost up to the top and then the coveris replaced. Now as soon as the cock provided in the pipe 10 is opened, the generation of gas begins, and in a few seconds, as soon as the air contained in the interior of the vessel 1 has escaped, the gas can be ignited. The lamp will now require no further attention, and also all risk of explosion is excluded. When it is desired to stop thelight, it is merely necessary to close the cock provided in the pipe 10 whereupon the resulting high pressure forces out the water which has entered the vessel 5, and thus interrupts the generation of gas, while on opening the cock the generation of gas begins again at once.

Figs. 2 and 3 show further modifications of the acetylene generator. In the construction shown in Fig 2, a number of water vessels are employed, having their bells 3 connected to a common burner pipe 10. The bells 3 may be fixed either singly or together in a water vessel 1 by means of metal straps 23 which are carried up from the bells and are connected to the wall of the Water vessel by means of removable studs or angle strips 24. In the same manner the carbid vessel 5 may be held by means of bolts 9 in the hell 3. The gas bells 3 communicate with the burner pipe 10 by means of pipes in each of which there are included two cocks 26. A further cock 27 in the pipe 10 serves for the purpose of discharging any deposited water. Instead of the grating 8 shown in Fig. 1, a perforated disk or plate 28 may be employed. The described construction allows of producing a continuous illumination by the fact that when one generator is exhausted the other generator is set in operation. In this arrangement the cocks leading to the exhausted generator are closed and the generator is charged afresh.

In the modification shown in Fig. 3, only one water vessel 1 resting on the box 2* is employed. A pipe 30 extends from the water vessel down nearly to the bottom of the box 2. On the box around the water vessel 1 there are arranged chambers 3 filled with carbid and which may be shut off from the box 2 by means of separate cocks 29. When a, chamber is exhausted it is shut off from the vessel 2* by means of the cook 29 and is charged afresh while another carbid chamber is set in operation. It is clear that a high gas pressure is produced in consequence of the high level of the water contained in the vessel 1. The gas pressure is increased up to one atmosphere and requires a burner of special construction.

The new burner is unaffected by the weather, will burn without soot, and will give a great lighting power.

Its head or upper end may be flat, domed, or even slightly pointed. On the head of the burner are the gas exit holes which consist of a number of fine openings or gas outlet slits of any desired shape arranged in a form of a square, circle etc., flush with the burner head. The gas outlet holes or slits are arranged so close together that the several lighting jets unite to form a single elongated flame terminating at its end in a kind of bunch or tuft ol flame. The jets from the holes or slits may also cross .one another, but only at a very acute angle in order to retain the elongated shape of the flame. In consequence of the high gas pressure the gas issues from the several holes with a velocity which is greater thanthe velocity of ignition of the gas, so that the actual flame will be situated at a certain distance from the burner head. In this manner the burner head is kept cool and there is no possibility of the gas exit holes becoming stopped up. The size of the holes depends mainly on the pressure acting upon the flame. It is also important that the burner head in which the gas exit holes are situated shall have very thin walls in order-that the holes shall form merely gas outlets and not gas passages,

because in the latter case pressure is lost by friction, and such passages are very liable to become chocked with dirt or water which is however impossible in the case of holes in a burner head composed of a thin shell. The burners may in this arrangement be made of any sees? is desired material because by reason of the distance of the flame from the burner head they do not become hot.

Having now particularly described and ascertained the nature of my invention I declare that what I claim isx 1. In a gas generator, the combination of a water receptacle, a gas bell, a carbid vessel located within said bell, said vessel having a perforated cover, iniperforate sides and a bottom having an opening for the admission of water to said vessel, a supporting grate adjacent said bottom, and

means for locking said gas bell and carbid vessel together, substantially as described.

2. In a gas generator, the combination of a water receptacle, :1 bell, a carbid vessel located within said bell, said vessel having a perforated cover, imperforate sides and a bottom having an opening for the admission of water to said vessel, a supporting grate adjacent saidbottom, a valved gas conveyor leading from said bell, and means for locking said gas bell and carhid vessel together, substantially. as described.

3. In a gas generator, the combination of a water recepiacle provided with a removable cover, a gas bell, a car-bid vessel located within said bell, said vessel having a perfo rated cover, imperforate sides, and a bottom having an opening for the admission of water to said vessel, a supporting grate adjacent said bottom, a valve gas conveyer leading from said bell, and locking devices secured to the bottom of said bell at right angles thereto for locking said bell and said carbid vessel together, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JOSEPH MARGRETH,

Witnesses O'rro W. HnLLMnIcn, l. CHRIST. HAFERMANN. 

